Html – Under windows, WebGL makes use of DirectX Runtime or OpenGL runtime

directxhtmlopenglwebgl

Under windows, there are two main 3D libraries. I am wondering WebGL use which? is it configurable? Is it configurable per browser?

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Google Chrome and Firefox will by default make use of ANGLE wrapper to convert OpenGL API calls to Direct3D 9.0 (to achieve better compatibility with most hardware). Users can change this default behavior but it seems to be very inconvenient to override this (currently it's not possible to change this settings programatically).

All other major browsers (on windows) will use OpenGL.

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Html –

Here's a page describing the differences (basically you can put html into a <button></button>)
And another page describing why people avoid <button></button> (Hint: IE6)

Another IE problem when using <button />:

And while we're talking about IE, it's got a couple of bugs related to the width of buttons. It'll mysteriously add extra padding when you're trying to add styles, meaning you have to add a tiny hack to get things under control.

Html – Max parallel HTTP connections in a browser

Max Number of default simultaneous persistent connections per server/proxy:

Firefox 2:  2
Firefox 3+: 6
Opera 9.26: 4
Opera 12:   6
Safari 3:   4
Safari 5:   6
IE 7:       2
IE 8:       6
IE 10:      8
Edge:       6
Chrome:     6

The limit is per-server/proxy, so your wildcard scheme will work.

FYI: this is specifically related to HTTP 1.1; other protocols have separate concerns and limitations (i.e., SPDY, TLS, HTTP 2).

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Html – vs. . Which to use

Html – Max parallel HTTP connections in a browser

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